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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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package org.apache.juneau.http;

import org.apache.juneau.internal.*;

/**
 * Category of headers that consist of a comma-delimited list of string values.
 * 
 * <p>
 * <h5 class='figure'>Example</h5>
 * <p class='bcode'>
 * 	Allow: GET, PUT
 * </p>
 * 
 * <h5 class='section'>See Also:</h5>
 * <ul class='doctree'>
 * 	<li class='extlink'><a class='doclink' href='https://www.w3.org/Protocols/rfc2616/rfc2616.html'>Hypertext Transfer Protocol -- HTTP/1.1</a>
 * </ul>
 */
public class HeaderStringArray {

	private final String[] value;

	/**
	 * Constructor.
	 * 
	 * @param value The raw header value.
	 */
	protected HeaderStringArray(String value) {
		this.value = StringUtils.split(value);
	}

	/**
	 * Returns this header as a simple string value.
	 * 
	 * <p>
	 * Functionally equivalent to calling {@link #toString()}.
	 * 
	 * @return This header as a simple string.
	 */
	public String asString() {
		return StringUtils.join(value, ',');
	}

	/**
	 * Returns <jk>true</jk> if this header contains the specified value.
	 * 
	 * @param val The value to check for.
	 * @return <jk>true</jk> if this header contains the specified value.
	 */
	public boolean contains(String val) {
		if (val != null)
			for (String v : value)
				if (val.equals(v))
					return true;
		return false;
	}

	/**
	 * Returns <jk>true</jk> if this header contains the specified value using {@link String#equalsIgnoreCase(String)}.
	 * 
	 * @param val The value to check for.
	 * @return <jk>true</jk> if this header contains the specified value.
	 */
	public boolean containsIC(String val) {
		if (val != null)
			for (String v : value)
				if (val.equalsIgnoreCase(v))
					return true;
		return false;
	}

	@Override /* Object */
	public String toString() {
		return asString();
	}
}
